Each academic year (Studienjahr) is generally divided into two and a half years, which is called a semester. The deadline for winter semester registration is July 15, and the school starts in 10. The deadline for summer semester registration is June 65438+ 10/5, and the school starts in April. Usually, teaching activities last about three months in summer and four months in winter. Vorlesungsfreizeit, also known as semester vacation, is used to prepare and summarize the semester or participate in internship.